Image forming method and image forming apparatus

Abstract

An image forming method includes applying white ink containing hollow resin particulate to a recording medium and contacting a heating roller having a diameter of 200 mm or less with a first surface of the recording medium.

What is claimed is: 
     
       1. An image forming method comprising:
 applying white ink containing hollow resin particulate to a recording medium; and 
 contacting a heating roller having a diameter of 200 mm or less with a first surface of the recording medium, and 
 contacting the heating roller with a second surface of the recording medium after the heating roller contacts the first surface. 
 
     
     
       2. The image forming method according to  claim 1 , wherein the hollow resin particulate has a 50 percent volume particle diameter (d50) of from 0.4 to 0.6 and a ratio (Y/X) of a maximum intensity Y in 1730 cm −1 ±10 cm −1  to a maximum intensity X in 1600 cm −1 ±10 cm −1  according to infrared spectroscopy of from 3.0 to 6.0. 
     
     
       3. The image forming method according to  claim 1 , wherein the recording medium has a basis weight of 70 gsm or less and an application amount of the white ink is 3.0 mg/cm 2  or more in the applying. 
     
     
       4. The image forming method according to  claim 1 , wherein the white ink contains a coumarin derivative or a benzoxazole derivative. 
     
     
       5. The image forming method according to  claim 1 , wherein the white ink contains an ultraviolet absorbent. 
     
     
       6. The image forming method according to  claim 1 ,
 wherein the white ink comprises one or more organic solvents, and 
 wherein a mixing SP value of the one or more organic solvents accounting for 3 percent by mass or more of the white ink is from 12.0 to 15.0 (cal/cm 3 ) 0.5 . 
 
     
     
       7. The image forming method according to  claim 1 ,
 wherein the white ink comprises resin particulate comprising at least one of urethane resin particulate and acrylic styrene resin particulate, and 
 wherein a mixing SP value of the resin particulate accounting for 0.1 percent by mass of the white ink is from 8.0 to 10.0 (cal/cm 3 ) 0.5 . 
 
     
     
       8. The image forming method according to  claim 1 , wherein, in the contacting, the heating roller is in contact with the recording medium over an entire region in a width direction of the recording medium, which is perpendicular to a conveying direction of the recording medium. 
     
     
       9. An image forming method comprising:
 applying white ink containing hollow resin particulate to a recording medium; and 
 contacting a heating roller having a diameter of 200 mm or less with a first surface of the recording medium, 
 wherein the white ink contains a coumarin derivative or a benzoxazole derivative. 
 
     
     
       10. An image forming apparatus, comprising:
 a white ink containing hollow resin particulate; 
 a white ink applying device configured to apply the white ink to a recording medium; and 
 a heating roller having a diameter of 200 mm or less configured to contact a first surface of the recording medium to which the white ink has been applied, 
 wherein the heating roller is further configured to contact a second. surface of the recording medium after the heating roller contacts the first surface. 
 
     
     
       11. The image forming apparatus according to  claim 10 , wherein the hollow resin particulate has a 50 percent volume particle diameter (d50) of from 0.4 to 0.6 μm and a ratio (Y/X) of a maximum intensity Y in  1730  cm -1  ±10 cm -1  to a maximum intensity X in 1600 cm -1 ± 10 cm -1  according to infrared spectroscopy of from 3.0 to 6.0. 
     
     
       12. The image forming apparatus according to  claim 10 , wherein the recording medium has a basis weight of 70 gsm or less and an application amount of the white ink is 3.0 mg/cm 2  or more in the applying. 
     
     
       13. The image forming apparatus according to  claim 10 , wherein the white ink contains a coumarin derivative or a benzoxazole derivative. 
     
     
       14. The image forming apparatus according to  claim 10 , wherein th white ink contains an ultraviolet absorbent. 
     
     
       15. The image forming apparatus according to  claim 10 ,
 wherein the white ink comprises one or more organic solvents, and 
 wherein a mixing SP value of the one or more organic solvents accounting for 3 percent by mass or more of the white ink is from 12.0 to 15.0 (cal/cm 3 ) 0.5 . 
 
     
     
       16. The image forming apparatus according to  claim 10 ,
 wherein the white ink comprises resin particulate comprising at least one of urethane resin particulate and acrylic styrene resin particulate, and 
 wherein a mixing SP value of the resin particulate accounting for 0.1 percent by mass of the white ink is from 8.0 to 10.0 (cal/cm 3 ) 0.5 . 
 
     
     
       17. The image forming apparatus according to  claim 10 , wherein, when the heating roller contacts the recording medium, the heating roller is in contact with the recording medium over an entire region in a width direction of the recording medium, which is perpendicular to a conveying direction of the recording medium.